BTW, I found that lifting up on the two pieces you're connecting and holding them together with the hook on the bottom and then actuating the tool seems to work the best, as opposed to pushing down. I know that doesn't seem to make sense, but try it.
1/2 cent apiece?? It would almost be worth it for me to buy a gun, I'd save a fortune on clips.
No one lives forever, the trick is creating something that will.